Composite sheet for artificial leather and method for its production
CA 1302067 C · Owner: Toray Industries, Inc. · Inventors: Watanabe, Koji; Fujii, Tateo; Honda, Yuzuru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A soft and strong composite sheet for artificial leather comprises a woven or knitted fabric and a non-woven layer intertwined with the fabric. The fabric comprises a high twist yarn and the non-woven layer has in it a number of fibers of a length greater than 20 mm the number being, at least 10 fibers/cm2. The sheet includes a binder. A method which can be employed for making such a sheet comprises superimposing on one another a fabric constructed at least partly from a highly twisted yarn and a non-woven fiber web, intertwining fibers of the non woven fiber web with the said fabric by needle punching and thereafter applying to the resultant structure a binder.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.